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[Chemical Knowledge]：The principle of industrial oxygen: make production more efficient

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With the continuous progress of science and technology, industrial oxygen has become an essential raw material for many industries, and its advantages cannot be replaced by other gases. So, what is the principle of industrial oxygen? Let's take a closer look.

we need to know that oxygen can be found in the air, accounting for 21% of the air. The principle of industrial oxygen production is to extract oxygen through the separation of air, because the difference between oxygen and nitrogen in air can be separated by factors such as temperature, pressure, molecular weight and chemical properties.

we can divide the process of separating oxygen into the following three steps.

the first step, in a large machine, to separate the air into several different gases. This process is the use of different molecular weight, the use of low temperature and low pressure molecular sieve separation method. When the air passes through the molecular sieve, the oxygen and nitrogen pass through different molecular sieves respectively, thus achieving the separation effect.

the second step, the separated gas is converted into a liquid state. This process aims to compress the gas into a liquid state and remove the impurities from it. Solid molecular sieves may be used to remove other impurities during the treatment of nitrogen. In the treatment of oxygen, copper can be used to remove impurities, because oxygen is more active and can react with copper after being heated. This process is usually carried out in a low-temperature workplace, and sometimes liquid nitrogen can also be used as a refrigerant to keep it cool.

the last step, the liquid oxygen is converted into a gaseous state. In order to increase the use of industrial grade oxygen, it is very necessary to restore the oxygen from liquid to gaseous state. This process uses a special method, low temperature boiling, also known as "extreme heat evaporation". In this way, the gas can be rapidly sublimated to become a gas.

above is the principle of industrial oxygen, but what production application does it have? In the coating, painting, plastic, rubber, processing, quenching and other industries, all need to use industrial grade oxygen. This is because oxygen is a strong oxidant, which can accelerate the reaction of many substances and increase the rate of chemical reactions. For example, in the metallurgical industry, oxygen is used to increase the efficiency of blast furnaces and converters and is essential in steel production.

In addition, oxygen is also a good coolant and can be used to cool many different acid-base substances. In the oil and gas industry, oxygen is often used as a highly efficient slurry and gas separator to avoid explosion and contamination of oil wells.

In a word, the principle of industrial oxygen is to extract oxygen through air separation, liquid, gaseous and other steps. With the continuous development of industrialization and the increasing demand, oxygen is widely used in the manufacturing industry of coatings, paints, plastics, steel, petroleum and other fields, and its high-efficiency reaction, strengthening effect, high-speed cooling and separation effect have become an indispensable choice for many industrial production.

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